# Study the word list: GCSE Maths: Shapes 3

Welcome to our GCSE Maths: Shapes 3 resource. Learn the words in the spelling list then try out the spelling games at the bottom of the page. Click on the learning tabs to discover different ways to study.

## About the word list: GCSE Maths: Shapes 3

Key words for GCSE Maths

 congruent Congruent shapes are identical. cross-section A cross-section is found by slicing a 3D shape. decagon A decagon is a shape with ten sides. diameter The distance through the centre from one side of a circle to the other is called the diameter. hypotenuse The hypotenuse is the longest side of a triangle. vector A vector has both size and direction and describes the movement of an object. locus A locus is a pattern formed by a point that moves according to a rule. loci Loci is the plural of locus. perimeter The perimeter is the distance around the shape. perpendicular Perpendicular lines are at right angles to each other. Pi The ratio of the circumference to the diameter of a circle is called Pi. polygon A shape with more than three sides is a polygon. prism A 3D shape with a constant cross-section is called a prism. tangent A tangent is a straight line that touches a circle only once. sine Sine is the ratio of the hypotenuse and opposite in a triangle.

## Use the list: GCSE Maths: Shapes 3

### Learn

 Look congruent Say Cover Write Check

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How to use:

Say the word. Click the speaker icon.

Cover the word.

Write the word.

congruent
cross-section
decagon
diameter
hypotenuse
vector
locus
loci
perimeter
perpendicular
Pi
polygon
prism
tangent
sine

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